Carotid Arteries/Jugular Vein

Question 1

What artery is the main arteries (bilateral) to the head and neck?

Answer 1

Common Carotid Arteries (Left and Right)

Question 2

Where does the common carotid artery split into the internal and external carotid arteries?

Answer 2

Within the carotid triangle

Question 3

This artery enters the skull through the the carotid canal int eh temporal bone. What artery is this and what does it supply?

Answer 3

• Internal Carotid Artery

- Supplies blood to the brain

Question 4

What artery is the main source of blood to the structures of the neck, face ans scalp?

Answer 4

External Carotid Artery

Question 5

What artery supplies the structures if the head that are external to the skull?

Answer 5

External Carotid Artery

Question 6

Waht are the eight (8) branches of the external carotid artery?

Answer 6

1) Superior Thyroid Artery
2) Ascending Pharyngeal Artery
3) Lingual Artery
4) Facial Artery
5) Occipital Artery
6) Posterior Auricular Artery
7) Superficial Temporal Artery
8) Maxillary Artery

Question 7

What are the terminal branches of the external carotid artery?

Answer 7

1) Superficial Temporal Artery

2) Maxillary Artery

Question 8

What is the slight dialation of the internal carotid artery where it joins the common carotid artery?

Answer 8

Carotid Sinus

Question 9

What is the function of the carotid sinus?

Answer 9

-It is a baroreceptor (blood pressure sensor)

Question 10

What nerve provides innervation to the carotid sinus?

Answer 10

Carotid sinus nerve, a branch of the glossopharyngeal nerve (CN IX)

Question 11

How does the carotid sinus function to regulate blood pressure?

Answer 11

As a reflex. When BP is up, it causes heart rate to decrease

Question 12

What is the small, reddish-brown mass located within or deep to the bifurcation of the common carotid artery?

Answer 12

Carotid body

Question 13

Where is the carotid body located?

Answer 13

deep or within the bifurcation of the common carotid artery

Question 14

What is the function of the carotid body?

Answer 14

It is a chemoreceptor which detects changes in the chemical makeup of the blood within the carotid

Question 15

What is the nerve innervation of the carotid body?

Answer 15

The carotid sinus branch of the glossopharyngel nerve (CN IX)

Question 16

How does carotid body function as a chemoreceptor to regulate the chemical makeup of the blood within the carotid artery?

Answer 16

If O2 is low or CO2 is high within the carotid, it causes a reflex to increase the rate and volume of resperation

Question 17

What vascular structure of the neck is never visible topographically?

Answer 17

Internal Jugular Vein

Question 18

What is usually the largest vein of the neck?

Answer 18

Internal jugular Vein

Question 19

The internal jugular vein is a continuation of what dural venous sinus and it drains into what major vein?

Answer 19

It is an direct extension of the sigmoid sinus

It drains into the brachiocephalic vein

Question 20

What is the dilation of the internal jugular vein at the origin below the jugular foramen?

Answer 20

Superior Jugular Bulb

Question 21

What are the tributaries of the Internal Jugular Vein?

Answer 21

1) Inferior Petrosal Sinus
2) Pharyngeal Veins
3) Facial Vein
4) Lingual Vein
5) Superior Thyroid Vein
6) Middle Thyroid Artery

Question 22

Which major vein of the neck DOES NOT drain into the internal jugular vein?

Answer 22

Inferior Thyroid Vein

Question 23

What is the dilation of the internal jugular vein near the termination into the brachiocephalic vein?

Answer 23

Inferior Jugular Bulb

Question 24

What is the significance of the inferior jugular bulb?

Answer 24

It contains a valve that prevents blood from backing up into the cranial vault